This year’s mixed bag of performers included stars like Demi Lovato, Kelly Clarkson, LMFAO, Pitbull, The Script, Foster The People, Mindless Behavior, David Guetta, Gym Class Heroes, and Lady Gaga, who all brought some of the year’s biggest hits to the MSG stage with their wild shows. “Wild” especially fits headliner Gaga, who performed her latest single, “Marry The Night,” in a hospital gown and mint-colored hair cap.

Click through to the gallery above to check out photos of all of your favorite stars at the 2011 Z100 Jingle Ball concert.

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